/**
*      author: Y_Yao
*      created: 2025-04-05 20:05:51
**/

#include<bits/stdc++.h>

#define int LL
using namespace std;
using LL = long long;
const LL LLINF = 9e18;
const int INF = 0x3f3f3f3f;
int n,m;

void solve()
{
    cin >> n >> m;
    int ans = 0;
    int cur = 1;
    for(int i = 0;i <= m;i++)
    {
        ans += cur;
        cur = cur * n;
        if(ans > 1e9)
        {
            cout << "inf" << endl;
            return;
        }
    }
    cout << ans << endl;
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    // cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}